根据提供的信息和语言素材设计教学方案，用英文作答。 

设计任务：请阅读下面学生信息和语言素材，设计一节英语阅读课的教案，教案没有固定格式，但须包含下列要点：

teaching objectives

teaching contents

key and difficult points

majoy steps and time allocation

activities and justification

教学时间：45分钟 

学生概况：某城镇普通中学高中一年级第二学期学生，班级人数40人，多数学生已经达到《普通高中英语课程标准（实验）》五级水平，学生课堂参与度与积极性一般。

语言素材： 

  The trick of eating healthily is remembering that no food in itself is good or bad；eating properly depends on eating the right variety of food in the right amount.Too much of even the most “healthy”food can lead to illness and disorders.

  If you like a snack，avoid chocolate and crisps and head for fruit，filled rolls，soup and baked potatoes instead.Sugar-free breakfast cereals are also a good bet.